diff --git a/src/mongo/db/exec/sbe/stages/union.cpp b/src/mongo/db/exec/sbe/stages/union.cpp
index a661e6c579f..c3cb11cbbe2 100644
--- a/src/mongo/db/exec/sbe/stages/union.cpp
+++ b/src/mongo/db/exec/sbe/stages/union.cpp
@@ -110,7 +110,7 @@ void UnionStage::open(bool reOpen) {
     }

     for (auto& child : _children) {
-        _remainingBranchesToDrain.push({child.get(), reOpen});
+        _remainingBranchesToDrain.push({child.get(), false});
     }

     _remainingBranchesToDrain.front().open();